Locking mechanism for large-angle inclined core pulling of die-casting die
By setting a linkage structure of pin and inclined core pulling in the die-casting mold, the locking problem of large-angle inclined core pulling is solved, and effective locking in a limited space is achieved, reducing design difficulty and cost.
Patent Information
- Application Number
- CN202423310317.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-31
AI Technical Summary
When pulling cores at large angles, conventional locking mechanisms cannot effectively lock the existing die-casting molds. Adding a reversing mechanism would increase costs and design complexity, and space would be limited.
A linkage structure of pin and inclined core pulling is set in the die casting mold. The pin is driven by a power device to pass through the inclined core pulling hole. Combined with the inclined design of the horizontal core pulling and the fixed template, the inclined core pulling is limited to prevent it from moving backward.
It effectively locks large-angle inclined core pulling within a limited space, reducing the complexity and cost of die-casting mold design and simplifying the layout of other mechanisms.
Smart Images
Figure CN223819622U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die casting mold technology, specifically to a locking mechanism for large-angle inclined core pulling of die casting mold. Background Technology
[0002] Core pulling in die-casting molds requires a mechanical locking mechanism to prevent the core from retracting during high-pressure die casting; retraction would compromise the product's shape and dimensions. Conventional mechanical locking mechanisms are typically located on a fixed mold plate and the core puller on a moving mold plate. A core-pulling power unit drives the core puller into the product's forming cavity. The moving and fixed mold plates close, with the fixed mold plate pressing the core puller against the moving mold plate to prevent retraction. However, large-angle angled core pullers are typically located at the bottom or top of the product to form specific shapes on the upper or lower surfaces. Using the aforementioned locking method would not effectively lock large-angle angled core pullers. Even if a separate reversing mechanism could lock large-angle angled core pullers, the limited space in die-casting molds would significantly increase mold costs and affect the arrangement of other mechanisms, increasing the design complexity of the die-casting mold. Utility Model Content
[0003] The purpose of this invention is to provide a locking mechanism for large-angle inclined core pulling in die casting molds. This locking mechanism can effectively lock large-angle inclined core pulling within the limited space of the die casting mold, and occupies little space, does not affect the arrangement of other mechanisms on the die casting mold, and facilitates the design of the die casting mold.
[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:
[0005] A locking mechanism for a large-angle inclined core pulling of a die-casting mold includes a fixed template and a movable template. A product forming cavity is provided between the fixed template and the movable template. The movable template is provided with an inclined core pulling through hole. An inclined core is provided in the inclined core pulling through hole. An inclined core pulling power device is provided for the inclined core pulling, and the inclined core pulling power device drives the inclined core pulling along the inclined core pulling through hole to extend into / out of the product forming cavity.
[0006] The moving template is provided with a first pin through hole, and the inclined core puller is provided with a second pin through hole. A pin is provided in the first pin through hole, and the pin is connected to a pin power device. After the inclined core puller extends into the product molding cavity along the inclined core puller through hole, the pin power device drives the pin to pass into the second pin through hole. The pin is used to limit the inclined core puller and prevent the inclined core puller from displacing along the inclined core puller through hole.
[0007] A pin-driven mechanism inserts the pin into the second pin hole of the inclined core-pulling mechanism, thereby limiting the inclined core-pulling and preventing it from retracting. The pin occupies little space in the die-casting mold, allowing its layout to be arranged after other mechanisms in the mold are in place, thus reducing the design complexity of the die-casting mold.
[0008] The included angle between the pin and the inclined core puller is less than 120°, preferably 90°.
[0009] The pin is mounted on the horizontal core puller, which is mounted on a horizontal core puller slide. The horizontal core puller slide is equipped with a horizontal core puller power device, which drives the horizontal core puller slide to extend into / out of the product molding cavity. After the horizontal core puller extends into the product molding cavity, the pin is located in the second pin through hole. By mounting the pin on the horizontal core puller slide, the pin and the horizontal core puller are linked, which reduces the impact of the pin on the die-casting mold design and further reduces the design difficulty of the die-casting mold.
[0010] The horizontal core puller is provided with a pin mounting hole, and the pin is located in the pin mounting hole. A pin limiting protrusion is provided on the side wall of the tail end of the pin, and the pin limiting protrusion is located in the pin limiting protrusion mounting hole, which is located on the horizontal core puller. With this structure, the pin can be easily fixedly installed on the horizontal core puller slide.
[0011] The horizontal core puller is located at the front end of the horizontal core puller slide, and a locking ramp is provided at the rear end of the horizontal core puller slide. The fixed template is provided with a pressing ramp. After the horizontal core puller extends into the product molding cavity, the moving template and the fixed template close, and the pressing ramp presses against the locking ramp to prevent the horizontal core puller from retracting. By pressing against the locking ramp on the fixed template, the horizontal core puller is limited, preventing it from retracting. At the same time, the pin is also limited, preventing the pin from shifting.
[0012] A clamping block is provided between the locking inclined surface and the pressing inclined surface. The clamping block can be used to adjust the distance between the locking inclined surface and the pressing inclined surface, thereby facilitating the depth of the horizontal core pull into the product molding cavity.
[0013] The ends of the oblique core pull and the horizontal core pull are used to fit the edges of the molded product.
[0014] This invention effectively locks large-angle inclined core pulling within the limited space of the die-casting mold by setting a pin on the inclined core pulling. It occupies little space, has little impact on the arrangement of other mechanisms on the die-casting mold, and facilitates the design of the die-casting mold. Attached Figure Description
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] Figure 1 This is a schematic diagram of the locking mechanism.
[0017] Figure 2 This is a partial structural diagram of the locking mechanism. Detailed Implementation
[0018] like Figure 1-2 As shown, a locking mechanism for a large-angle inclined core pulling of a die-casting mold includes a fixed template 1 and a movable template 2. A product forming cavity is provided between the fixed template 1 and the movable template 2. The movable template 1 is provided with an inclined core pulling through hole 34. An inclined core pulling 3 is provided in the inclined core pulling through hole 34. An inclined core pulling power device 31 (hydraulic cylinder) is provided at the tail of the inclined core pulling 3. The inclined core pulling power device 31 drives the inclined core pulling 3 to extend into / out of the product forming cavity along the inclined core pulling through hole 34.
[0019] Between the fixed template 1 and the moving template 2, a horizontal core puller 4 is provided on the moving template 2. The horizontal core puller 4 is located at the head end of the horizontal core puller slide 41, and a horizontal core puller power device 42 (hydraulic cylinder) is provided at the tail end of the horizontal core puller slide 41. The horizontal core puller power device 42 drives the horizontal core puller slide 41, so that the horizontal core puller 4 extends into / out of the product molding cavity. The ends of the horizontal core puller 4 and the ends of the oblique core puller 3 are used to cooperate with the edge of the molded product.
[0020] A locking ramp 61 is provided at the rear end of the horizontal core-pulling slide 41, and a pressing ramp 62 is provided on the contact surface between the fixed template 1 and the horizontal core-pulling slide 41. A pressing block is provided between the locking ramp 61 and the pressing ramp 62. After the horizontal core 4 extends into the product molding cavity, the moving template 2 and the fixed template 1 close the mold, and the pressing ramp 62 presses the pressing block. The pressing block resists the locking ramp 61 to prevent the horizontal core from moving backward during high-pressure die casting.
[0021] The horizontal core 4 is provided with a pin mounting hole 53, and the pin 5 is located in the pin mounting hole 53. A pin limiting protrusion 54 is provided on the side wall of the tail end of the pin 5, and the pin limiting protrusion 54 is located in the pin limiting protrusion mounting hole 55. The pin limiting protrusion mounting hole 55 is located on the horizontal core 4 so that the pin 5 is fixedly connected to the horizontal core 4 and moves with the horizontal core 4.
[0022] The included angle between the pin 5 and the inclined core puller 3 is less than 120° (preferably 90°). The moving template 2 is provided with a first pin through hole 51, and the inclined core puller 3 is provided with a second pin through hole 52. After the inclined core puller 3 extends into the product molding cavity along the inclined core pull through hole 34, the second pin through hole 52 communicates with the first pin through hole 51. After the inclined core puller 3 extends into the product molding cavity along the inclined core pull through hole 34, the horizontal core puller power device 42 drives the horizontal core puller slide 41, causing the pin 5 to extend into the first pin through hole 51 and the second pin through hole 52, thereby limiting the inclined core puller 3 and preventing it from retracting.
[0023] This embodiment effectively locks large-angle inclined core pulling within the limited space of the die-casting mold by setting a pin on the inclined core pulling. It occupies little space, has little impact on the arrangement of other mechanisms on the die-casting mold, and is easy to design.
[0024] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims
1. A locking mechanism for large-angle inclined core pulling in a die-casting mold, characterized in that: The device includes a fixed template and a movable template, with a product forming cavity between them. The movable template has an angled core-pulling hole, within which an angled core is installed. The angled core is equipped with an angled core-pulling power device, which drives the angled core to extend into / out of the product forming cavity along the angled core-pulling hole. The movable template has a first pin through hole, and the angled core has a second pin through hole. A pin is installed in the first pin through hole, and the pin is connected to a pin power device. After the angled core extends into the product forming cavity along the angled core-pulling hole, the pin power device drives the pin to pass through the second pin through hole. The pin is used to limit the angled core and prevent displacement along the angled core-pulling hole.
2. The locking mechanism for a large-angle inclined core pulling of a die-casting mold according to claim 1, characterized in that: The included angle between the pin and the inclined core puller is less than 120°.
3. The locking mechanism for a large-angle inclined core pulling of a die-casting mold according to claim 1, characterized in that: The pin is mounted on the horizontal core puller, which is mounted on the horizontal core puller slide. The horizontal core puller slide is equipped with a horizontal core puller power device. The horizontal core puller power device drives the horizontal core puller slide to extend into / out of the product molding cavity. After the horizontal core puller extends into the product molding cavity, the pin is located in the second pin through hole.
4. The locking mechanism for a large-angle inclined core pulling of a die-casting mold according to claim 3, characterized in that: The horizontal core puller is provided with a pin mounting hole, the pin is located in the pin mounting hole, and a pin limiting protrusion is provided on the side wall of the tail end of the pin, the pin limiting protrusion is located in the pin limiting protrusion mounting hole, and the pin limiting protrusion mounting hole is located on the horizontal core puller.
5. The locking mechanism for a large-angle inclined core pulling of a die-casting mold according to claim 3, characterized in that: The horizontal core puller is located at the front end of the horizontal core puller slide, and a locking slope is provided at the rear end of the horizontal core puller slide. The fixed template is provided with a pressing slope. After the horizontal core puller extends into the product molding cavity, the moving template and the fixed template close the mold, and the pressing slope presses against the locking slope to prevent the horizontal core puller from retracting.
6. The locking mechanism for large-angle inclined core pulling of a die-casting mold according to claim 5, characterized in that: A clamping block is provided between the locking inclined surface and the clamping inclined surface.
7. The locking mechanism for a large-angle inclined core pulling of a die-casting mold according to claim 3, characterized in that: The ends of the oblique core pull and the horizontal core pull are used to fit the edges of the molded product.